Kate "hasn't been given the book about how to be a princess," Diana's former bodyguard Ken Wharfe tells PEOPLE

By Simon Perry
Updated March 23, 2016 08:00 AM

Princess Kate is opening up about her little girl Charlotte Elizabeth Diana – and how she s carrying on the most loving traditions of William s mom. Subscribe now for an inside look at how Kate is honoring the legacy of her mother-in-law, Princess Diana, only in PEOPLE!

From her fashionable style to her stunning engagement ring and, of course, the symbolic naming of her daughter (Princess Charlotte Elizabeth Diana), Princess Kate has evoked the memory of her late mother-in-law Princess Diana in many ways.

Now, as she tackles serious issues, such as children’s mental health, and juggles the expectations of an adoring public with her desire to give Prince George, 2, and Charlotte, 11 months, as peaceful and private an upbringing as possible, Kate and husband Prince William are embracing Diana’s legacy in ways big and small.

For more on how Princess Kate is following in Diana’s footsteps, pick up the latest issue of PEOPLE, on newsstands Friday.

“She would be incredibly proud,” one of her closest friends, Rosa Monckton, tells PEOPLE in this week’s cover story. (Diana was a godmother to Monckton’s daughter, Domenica.)

“To be able to give their children a stable life in the country is worth so much,” she adds. “They have a lifetime of flashbulbs ahead of them.”

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For some, it comes as no surprise that Kate would be inspired by her mother-in-law, who died in a car crash in Paris in 1997. (At 36, she was just two years older than Kate is now.)

“What other role models does Kate have within the royal family?” says Diana’s former bodyguard Ken Wharfe, author of Closely Guarded Secret. “She hasn’t been given the book about how to be a princess.”